Mine-ventilating appliance



J. F. GAMILLE. MINE VENTILATING APPLIANCE, APPLICATION FILED MAY7,1919.

Patented Mar. 22, 1921.

UNITED s'rATEs m orrlce.

' cums r. GAIILLE, or s mmits, rENNsYLvAmA.

To allwknm'itmaycmwem:

Be it known that I, James F. GAMILLE, a citizen of the United States,residing at Fredericktown, in the county of Washmgton and StateofPennsylvama, have invented certain new and useful Improvements inMine-Ventilating A pliances, of which the followin is a spec' cation.

This invention relates to pneumatic designal or alarm in the mine and atpoints or locatlons distant from the mine.

failure to or at various locations A still further object of theinvention is to provide in a tunnel or mine shaft supplied withartificial ventilatingg air currents, devices which shall be operated bysuch currents and cease to operate simultaneously with the failureor-disorder of the air current producing means so as to signal such inand outside of a mine or tunnel.

.In the accompanying drawings forming part of this application Figure1"i's a side view illustrating one form of the invention electricallyconnected for light and bell signaling, the dotted lines showing the airvane as indicating absence of air current in a mine or tunnel.

Fig. 2 is a top view of what is shown in Fig. 1.

Fig. 3 is a detail perspective view showin a modification of Figs. 1 and2.

he same reference characters denote the same parts throughout theseveral views of the drawings.

In view of the fact that the purpose of the invention is to have themine ventilating -or vane placed in such currents, I

device such as a blade the path of movement of have devised devices formounting said vanes and for affording air currents operate a means forelectrically connecting the mountings with signals such as an audiblealarm and lights which may be in places remote post 12 Specification trea-amen. t te 1921 Application filed m 7, 1919. semi 10. 295,313.

from a mine or tunnel as well as located adjacent thereto, and which mayhave suitable switchboards.

In carrying out in invention, as illustrated especially in igs. 1 and 2of the drawings, I use a single blade 1, having an arm 2 pivoted as at 3for swinging movement in an artificially ventilated mine or tunnel. Thepivot post or arbor 9 of the arm 2 is wired with a battery which iswired .with the ends of a contact guide 4.. The

arm 2 is operated by ventilating air currents through the mine strikingthe blade 1, which holds the arm at one end of the guide 4, so as tooperate the safety signal light 5. When ventilating currents cease, thearm 2 is retractedb a coil spring 8 to the other end of the gui e 4 soas to operate the danger light 6 and the alarm signal 7. The arm 2 mayhave a weight 5 adjustable on a screw 10, to assist in dropping the armto danger position. The spring 8 may be omitted and a weight and leverdevice substituted for dropping the arm. Said device comprises a screwstem 14 having a weight 13 adjustable thereon, a stationary having aright angle projection 11 upon which the stem 14 is pivoted as is also alever 15 through which the stem extends, said lever 15 being connectedwith a bracket 15 attached to the arm 2, by a connecting link 10*. Aslong as the ventilating air currents maintain the arm blade insubstantially horizontal position the said lever 15 and the link 10 arein extended position, but upon such current pressure ceasing, the weight13 will retract the said lever and pull the arm to danger position.

It must be understood that the vane mountings should be so placed in amine as to position the vane or vanes in the path of the. airventilating currents; that the electric signals may be located in themine as well as distant from the mine; that means Therefore I do notwish to confine myself in the above noted respects, nor to limit theinvention in size, material and arrangement with respect to mounting thevanes and counterbalancing them, but reserve the right to make suchchanges and variations in the manufacture and practical application ofthe invention as may come within the scope of the appended claims.

Having thus described-my invention what I claim as new and desire tosecure by Letters Patent is:

1. A device of the type described, including a vane, a pivotallysupported counterbalanced member carrying said vane, 21 segmental guidefor restricting the movement of said vane-carrying member, an electricalcontact at each end of said segmental guide, and an electrical contactcarried by said vane-carrying member to make contact with eithercontactof said segmental guide.

2. A device of the type described, including a vane, a pivotally mountedcounterbalanced member carrying said vane, a guide member having asegmental slot for restricting the movement of said vane-carryingmember, an electrical contact at each end of said segmental guide, andan electrical contact carried by said vane-carrying member to makecontact with either contact of said segmental guide..

'3. A device of the type described, in-

cluding a vane, a pivotally mounted and adjustably counterbalancedmember carrying said vane, a segmental guide for restricting themovement of said vane-carrying member, an electrical contact at each endof said segmental guide, and an electrical contact carried by saidvane-carrying member to make contact with either contact of saidsegmental guide.

4. A device of the type described, in-

cluding a vane, a pivotally and resiliently mounted and counterbalancedmember carrying said vane, a segmental guide-member for restricting themovement of said vanecarrying member, an electrical contact at each endof said segmental guide, and an electrical contact carried by saidvane-carrying member to make contact with either contact of saidsegmental guide. i

5. A device of the type described, including a vane, a pivotallysupported member carrying said vane, comprising an arm controlled by aresilient member, and hav-' ing applied laterally thereto a threadedmember with a movable counterbalance thereon, a segmental guide for saidarm, an electrical contact at each end of said segmental guide, and anelectrical contact carried by said vane-carrying member to make contactwith either contact of said segmental guide. In testimony whereof Iafiix my signature in presence of two witnesses.

JAMES F. GAMILLE. Witnesses V A W. B. -VANDEGRIFT, .R. S. BANE.

